I have been a big fan of WIX filters and have used them for years on my '91 Dyna. But when I checked their specs. on the 57348 and 51348 previously (couple of years ago), the nominal micron rating was too high for use on my '03 UC. However, they must have redesigned that filter to produce a nominal rating of 5 microns which is what they list on their website. So, once I use up all the HD filters I bought by mail order, I WILL be switching back.
As posted above, here are the specs on the WIX filter:
Part Number: 57348
UPC Number: 765809573482
Principal Application: Harley Davidson Motorcycles - Chrome Version of 57148
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Glass
Height: 3.404
Outer Diameter Top: 2.921
Outer Diameter Bottom: Closed
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8
Anti-Drain Back Valve: Yes
Max Flow Rate: 7-9 GPM
Nominal Micron Rating: 5
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.734 2.430 0.226
TQ
As posted above, here are the specs on the WIX filter:
Part Number: 57348
UPC Number: 765809573482
Principal Application: Harley Davidson Motorcycles - Chrome Version of 57148
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Glass
Height: 3.404
Outer Diameter Top: 2.921
Outer Diameter Bottom: Closed
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8
Anti-Drain Back Valve: Yes
Max Flow Rate: 7-9 GPM
Nominal Micron Rating: 5
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.734 2.430 0.226
TQ